I spend more time than I should in the churning/FF communities (all of which are centered around FlyerTalk). It's fun. Ben's blog is one of the few I follow, most aren't that great. Frequent Miler is a solid resource, as is Wandering Aramean, but nothing beats being active on FlyerTalk itself. In the last five years I've managed to earn and spend about 1.5 million miles and points, with maybe 50k airline miles from a…
Any recommendations on how to get started?
Play by the same rules as the stock market: it's not about picking winners a low percent of the time but rather avoiding losing anything and running a reasonable risk profile.
If you've got a bit of business spend you can allocate, then you get to play without risking anything. At worst (if some bonus doesn't come through because you missed fine print), you're right where you started (not earning extra rewards).
Disclaimer: Assume it's implied, but no points are worth souring a business relation over. Don't chase points too far.
If you need to play solely with your own money, it gets a little dicier. For example, that $450 annual fee (not waived) card that results in $1,500 worth of travel points w/ $5k spend in 3 months? You'd better be sure you know all the rules.
I'd recommend (as someone else did), trying a few of the smaller card offers. Chase Freedom is a good small starter. They run decent cash bonuses with low spend, no annual fee, and it can ultimately pair with CSP.
Basically, approach it the same way you'd approach a casino. They're trying to attract your business. You're trying to game the system. They're constantly tweaking their rules to mitigate the impact of incentives on their bottom line. Learn the basics and then decide how far you want to go.